Projection apparatus



S P 1934- D. F. NEWMAN ET AL 1,972,455

- PROJECTION APPARATUS Filed May 24. 1928 INVENTOR S ATTORNEY PatentedSept. 4, 1934 UNITE STATES,

1,972,456 PROJECTION APrAnA'rUs David F. Newman, Freeport, and Robert C.

Underwood, Brooklyn,

N. Y., assignors to Trans-Luz Daylight Picture Screen corpora tion, NewYork, N. Y., a corporation of Delaware Application May 24, 1928, SerialNo. 280,169

6Claims.

This invention relates to a projection apparatus-andmore particularly tomeans for maintaining a tape ejected from a ticker in substantiallyuniform position during projection.

45; It is an object of this invention to provide a.

projection apparatus mounted adjacent a datarecording device in whichthetape passes directly from the ticker to the projection positionwithout the formation of any substantial loop in the tape 10.;-therebetween.

- Another object of this invention is to provide a projection apparatuswherein the tape, after it leaves the projection position, is deflectedfrom its normal path'while it is being drawn through the apparatus,whereby the tape in projecting position is substantially taut andsmooth.

Another object of this invention is to provide means for locking thetape at a point between the projecting position and the pulling means,wherev by movement thereof is prevented when the ticker is at rest andthe tension of the tape has increased.

7 Further objects will appear from the following description, appendedclaims and accompanying drawing in which: i

. Figure 1 is a side elevation of an apparatus embodying our invention,theticker and projection system being illustrated diagrammatically.

Figure -2 is a top plan view of the device constituing our invention.

Referring to the drawing in which like reference numerals designate-likeparts, the reference number 1 designates a data-recording device havingfeed rolls 2, 2, a printing mechanism 3, and the tape guide '4. Thisdata-recording device may be of any suitable type and, since it does notform an essential part of this invention, further description thereof isdeemed unnecessary here.

l The tape during its ejection from the ticker 1 passes from under theguide 4 which, as above pointed out, is part of the ticker mechanismdirectly to a support 5 in projecting position. The support 5 may be aglass table or a rectangular frame having an opening through which thetape isprojected. When in position on the support, images'of the indiciaon the tape are obtained, by means ,of the projection apparatus 6, on ascreen? with the aid of the mirror 8. Since the' hich there is pivotallydisposed a bell-crank lever 11 having arms 12 and 13. The arm 12 of thebell-crank lever may be formed so that it will-ride on the tape betweenthe guide rolls 9 and 9'. If desired, the arm 12 may be formed withbifurcated legs 14 and 15 and carry a roller 16 or any other suitablemeans to ride or bear on the tape and 'not prevent its movement throughthe apparatus.

The arm 13 of the bell-crank lever 11 is formed at its free end with acurved or cam-like surface 1'7 and mounted in cooperative relationshipto a table or guide 18. The bell-crank lever 11 is normally urged bymeans of a spring 19 or any other suitable means to cause the arm 12thereof to bear upon the tape and to maintain the arm 13 out of contactwith the table 18. The tape is drawn through the apparatus by anywell-known feeding means of the friction clutch type, designated byreference numeral 20, and operated through gearing by the motor 21.

To prevent the intermittent jerky movement' of the tape as it is ejectedfrom the ticker from being transmitted to the tape in projectingposition, there is disposed in any suitable manner, as on a bracket 22,a spring tension member at the end of the support adjacent the ticker.This ten- 30 sion member may be of any suitable type. The formillustrated comprises a curved spring member having an inclined bodymember 23 carryin a looped-end member 24 adapted to engage the tape onthe support. This spring permits the 95 tape to be drawn through theapparatus by the tape-pulling means, but prevents it from being pushedthrough the apparatus by the tickerejecting means. If desired, means toadjust the tension of 'the spring on the support may be provided.

In operation, the tape is intermittently ejected beneath the tickerguide 4 from the ticker 1 and is pulled or drawn in a substantiallyhorizontal direction, in the example shown, directly, without theformation of any substantial loop, on to the projection table or support5 beneath the looped end 24 of the tension member. When in position onthe projection table, images of the tape indicia are obtained on thescreen 7 as well 9 understood in the art; The tape, as previouslydescribed, is pulled through the apparatus by means of a slip-clutchfeeding means 20; that is to say, the pulling roller slips and isrendered ineffective when the tension of the tape is increased. In thenormal operation, the roller 16 rides on the tape as illustrated and thearm 13 is maintained out of contact with the table 18. When the tensionof the tape is increased, the bend in the tape in advance of theprojection table raises the bell-crank lever arm 12, whereby the arm 13is lowered and brought into contact with the tape on the locking tablethereby looking the tape and causing the pulling mechanism to slip andbe ineffective, at the same time putting no strain on the ticker. Whenthe tension of the tape has decreased, the arm 12 is lowered and the arm13 raised, whereby the tape is released from its locked position andrendered capable of being drawn through the apparatus.

The apparatus above described permits the projection action without anysubstantial intermittent jerky movement, whereby spectators viewing iton the screen may not be subjected to annoyance. This apparatus does notform any substantial loop between the ticker and the projection table.

Since it is obvious that various modifications may be made withoutdeparting from the invention, we do not intend to limit ourselves to theexact details above described, except as defined inthe claims. I Weclaim: K

1. Ina data-recording projection apparatus, means to support a tape inprojecting position,

means adjacent one end of said supporting means to substantially preventthe intermittent variations and movement in the tape from beingtransmitted to thetape in projecting position, means in advance of saidsupporting means and adjacent thereto to maintain the tape taut in saidprojecting position, and means positioned in advance of said supportingmeans to lock the tape and prevent its movement through the apparatuswhen the tension of the tape has increased.

2. In a datat-recording projection apparatus, means to support a tape inprojecting position, means adjacent one end of said supporting means tosubstantially prevent the intermittent variations -and movement in thetape from being transmitted to the tape in projecting position, andmeans in advance of said supporting means and adjacent thereto tomaintain the tape taut in said projecting position, said last namedmeans comprising a bell-crank lever having one arm thereof on said tapeand the other arm adapted to lock the tape and prevent its withdrawal bythe feeding mechanism when the first-named arm is raised.

3. In a'data-recording projection apparatus, a support to maintain thetape in projecting position, a table in advance of said support, meansto deflect a tape passing from said support to said table, and meanscooperating with said table to lock the tape and prevent itswithdrawalfrom the apparatus when the tension of the tape has increased.

4. In a; data-recording projection apparatus, a support to maintain thetape in projecting position, a table in advance of said support, abellcrank lever, one arm of said lever riding on said tape between saidsupport and table, the other arm being in cooperative relation with saidtable and normally out of contact therewith whereby it may be broughtinto locking position when the first arm is raised.

5. In a system of the character described, the combination with aprojection support, of means for moving a tape thereacross, there beinga tape loop of varying length between said projection support and saidmeans, and a control member coacting with said tape after passage beyondsaid support, said control member ascending under tape control whenthetape loop shortens and descending under the influence of gravity whenthe tape loop lengthens, said control member comprising means foreffecting the anchoring of said tape whereby it may slip with respect tosaid first named means.

6. In a system of the character described, the

combination with a projection support, of means for moving a' tapethereacross, there being a tape loop of varying length between saidprojection

